| State: | OK |
| Type: | SH |
| Route: | 156 |
| Map Custom: | yes |
| Maint: | ODOT |
| Alternate Name: | 101 Ranch Memorial Road |
| Length Mi: | 16.91 |
| Direction A: | South |
| Direction B: | North |
| Established: | March 1, 1965 |
| Terminus A: | in Marland |
| Terminus B: | east of Ponca City |
| Previous Type: | SH |
| Previous Route: | 153 |
| Next Type: | SH |
| Next Route: | 162 |
State Highway 156, abbreviated SH-156, is a highway maintained by the U.S. state of Oklahoma. Spanning 16.91miles through the north-central part of the state, it connects the town of Marland, Oklahoma to US-60/US-77/US-177 in the north to US-77 in the west. It is the former alignment of US-77.
Starting at US-77, the highway goes east for 8miles until reaching Marland, where it turns northward. 9miles later, after crossing from Noble County into Kay County, it ends at US-60/US-77/US-177 4miles west of Ponca City.
SH-156 is designated as the 101 Ranch Memorial Road. A historical marker to the ranch is located along the highway.[1]
The entirety of SH-156 was once part of US-77. US-77 was realigned and SH-156 was assigned to the old alignment on March 1, 1965.[2] On July 14, 1969, US-60/US-77/US-177 was realigned at SH-156's north end, necessitating a slight extension northward.[2] No further changes have taken place since 1969.